NMDhcpConfig
int nm_dhcp_config_get_family (NMDhcpConfig *config);
NMDhcpConfig *config
GHashTable * nm_dhcp_config_get_options (NMDhcpConfig *config);
const char * nm_dhcp_config_get_one_option (NMDhcpConfig *config, const char *option);
const char *option
#define NM_DHCP_CONFIG_FAMILY "family"
#define NM_DHCP_CONFIG_OPTIONS "options"